Essentially Satori is a sudden experience, and it is often described as a "turning over" of the mind, just as a pair of scales will suddenly turn over when a sufficient amount of material has been poured into one pan to overbalance the weight in the other. Hence it is an experience which generally occurs after a long and concentrated effort to discover the meaning of Zen.
Alan WattsYou have seen that the universe is at root a magical illusion and a fabulous game, and that there is no separate "you" to get something out of it, as if life were a bank to be robbed. The only real "you" is the one that comes and goes, manifests and withdraws itself eternally in and as every conscious being. For "you" is the universe looking at itself from billions of points of view, points that come and go so that the vision is forever new.
Alan WattsFor the world is an ever-elusive and ever-disappointing mirage only from the standpoint of someone standing aside from itโas if it were quite other than himselfโand then trying to grasp it. But a third response is possible. Not withdrawal, not stewardship on the hypothesis of a future reward, but the fullest collaboration with the world as a harmonious system of contained conflictsโbased on the realization that the only real "I" is the whole endless process.
Alan Watts